Bush became a pariah because he was a dim-wit and couldn't explain anything well at all. Most of the crap happening now is the result of forces 10-20 years in the works (housing market crash has been coming for a while, deposing Saddam was official U.S. policy even under Clinton and they violated 19 U.N. resolutions to boot, etc.) and can't be blamed SOLELY on him, though it can be said that he could have done more.
He DID warn Congress (the Democratic congress) several times that more needed to be done to turn the economy around before it tanked, but nothing got done. Of course, people are short-sighted and retarded, and like to blame everything on the person who just left - so if in 20 years Obama's plans to reduce the debt have failed, and his programs end up spending even MORE money, I'm sure we'll just blame it on whoever serves after him. "Obama was great he made all these programs to try and stimulate the economy, but so-and-so took over and made them fail and now we're in debt! Boo hoo!"
In sum, I'm not a huge Bush fan, but I'm not about to blame him for the whole world's problems either.
So to borrow Yahtzee's line: To balance out the seriousness of this post,
Boingo
Boingo
Whoopsie
Knickers